An automatically traveling floor cleaning appliance during travel is capable of traveling over low obstacles extending lengthwise, typically represented by a carpet border, having an upwardly inclined obstructing surface, with a direction of travel at a right or acute angle with respect to a longitudinal extent of the obstacle. The appliance also has an obstacle detector. The appliance is formed so that the obstacle or an area adjoining same may be cleaned using a procedure in which the appliance assumes a direction of travel based on the extent of the obstacle, and with regard to the obstructing surface includes traveling on a floor area in front of the obstacle, and at a lateral distance of an associated boundary edge of the appliance in the direction of travel from the obstructing surface which is smaller than that corresponding to a width of the appliance perpendicular to the direction of travel.

An autonomous cleaning device is provided. The autonomous cleaning device includes: a device body; and a drive module, a cleaning module and a sensing module, wherein the drive module, the cleaning module and the sensing module are detachably assembled to the device body, respectively.

The invention relates to a vacuum cleaner. The vacuum cleaner comprises a head portion; a body; a vacuum module positioned in the body, the vacuum module being adapted to generate suction for collecting dust via the head portion; a hose member adapted to connect the head portion with the vacuum module; and a guide member associated with the hose member; wherein the guide member is adapted to guide movement of the hose member such that, in response to movement of the guide member, the hose member automatically extends between a retracted position and an extended position to thereby position the head portion relative to the body.

The present disclosure relates to a robot cleaner having a filter for preventing the cleaner from being constrained by an obstacle. The robot cleaner has a constraint prevention filter arranged to face the front with respect to an agitator, and thus the robot cleaner may be prevented from being constrained as a result of an obstacle being stuck on a cleaning nozzle. In addition, the present disclosure relates to a depth sensor control system enabling the depth of an object to be accurately measured by controlling the amount of light received by a sensor. The depth sensor control system measures, at a light-receiving part, the intensity and frequency of an infrared (IR) ray reflected from an object, and controls the amount of light based on a histogram created using the measurement, and thus enables depth information of an object to be accurately measured without using separate additional equipment.

A vacuum cleaner and a control method thereof, wherein the vacuum cleaner includes a vacuum cleaner body, a floor brush assembly, and an extension tube connecting the two together. The floor brush assembly comprises a plurality of different floor brushes for performing different cleaning work. The vacuum cleaner is further provided with a control unit and a detection unit. The detection unit comprises a floor brush current detection module for detecting current passing through an electric motor in a floor brush. The floor brush current detection module sends detection signals to the control unit, and the control unit controls the electric motor to maintain an operating state or stop the operating state according to the detection signals.

A vacuum cleaner includes a housing, a debris chamber defined within the housing, and a motor assembly connected to the housing and operable to generate airflow through the debris chamber. The motor assembly includes a motor, an impeller, an impeller housing, and a controller. The impeller is connected to the motor and operable to generate airflow upon operation of the motor. The impeller housing is constructed of an electrically-conductive material. The impeller is positioned within the impeller housing. The controller includes a circuit board assembly. The circuit board assembly including a common circuit, and the impeller housing is electrically connected to the common circuit.

A vacuum cleaner includes a housing, a debris chamber defined within the housing, a motor assembly connected to the housing and operable to generate airflow through the debris chamber, and a controller communicatively coupled to the motor assembly. The motor assembly includes a motor and an impeller. The controller includes a processor and a memory. The memory includes instructions that program the processor to operate the motor to cause the impeller to generate airflow through the debris chamber, detect an alert condition, and generate a human perceptible audible alert in response to the detected alert condition.

A controller for a vacuum cleaner includes a processor and a memory. The memory includes instructions that program the processor to operate a motor at a first power level, receive a temperature of a drive component associated with the motor from a temperature sensor, and compare the temperature of the drive component associated with the motor to a first threshold temperature. The processor operates the motor at a second power level lower than the first power level for a period of time when the temperature of the drive component associated with the motor is greater than or equal to the first temperature threshold, and continues operating the motor at the first power level when the temperature of the drive component associated with the motor is less than the first temperature threshold.

The present disclosure relate to a cleaner and a controlling method, more particularly, to a vacuum cleaner that is configured to control a suction power and a duct pickup performance based on the material of the floor and the amount of the dust and foreign substances placed on the floor, and a controlling method of the same.

A device for conducting motor recognition and protection is disclosed. The device comprises a current detection circuit and a microprocessor, of which the current detection circuit is used for detecting an operation current from a roller brush driving motor that is integrated in a suction head of a vacuum cleaner. Moreover, the microprocessor is configured for determining a product model of the roller brush driving motor based on the operation current, deciding a protection parameter set according to the product model, and conducting a motor protection for the roller brush driving motor after loading at least one motor protection parameter contained by the protection parameter set.